Handle for instruments for making examinations



Feb. 24, 193.1. w. J. CAMERON HANDLE FOR INSTRUMENTS FOR MAKINGEXAMINATIONS Original Filed Sept. 4, 1924 fao e fas Patented Feb. 24,1931 YWILL '.fr. cAMEnoN, or CHICAGOQILLINGS i l HANDLE FonINsTnUMnNl'rsFORMAR-ING EXAMINATroNs;

. Application meeseptember 4, 1924, serial NQ'. 735,973, neuem@YFebruary e, 192s, n i

iMy Vpresent invention relates to arliandl" for-instruments usedmmialnng surgical, den,-

- tail, or. optical examinations, inspections and n diagnoses. Moreparticularly my present in- :ly ventio'n has reference to a handle thatmaybe removably secured ,to an ophthalmoscvope, retinoslcope or ,otheroptioalinstrument, orto a speculum orsimilar surgical instrument, so

that the, operator may readily examine tis- 10k sues remote fromexternalobservation. rlhe construction ot' this handle is such kthat'the tissue under investigation will be illuminated by .the lrays ofaminiature bulb orlamp which rays are; magnified through a lenticular ele15 ment in theend of ,the handle. and with which the rays maybe focusedupon the part underiinspection. .r Y Y Y The primary object .of ,mylinvention rel sidesvinithe provision of a handle wherein ils Carried theminiature bulb'or lamp` in `a socket element'` andwhichis-,adaptedrtoube rotatedg 'upon its :axis ,andomay be bodily movedlongitudinally by means `of aV control elementfthat is operableifrom theexterior ofthe handle. -Anotherobject of my inven-y tion `resides inproviding ahandle structure that may be readily yattached to'orvdetached from the surgical. or 4optical, instrument and Whicheffectively coacts ,therewith so4 asto until the incandescent lamellt'therein' ,is ,-.SO

dis-posed Withfrelaton t0 thelniagnifyes lens V,andthepr'ojeetingretlector of 'an ophthalmascope, and'lam also able to"k movethebulb Y longitudinally ytowardand'qaway from the lens, 'until ythedesired l character of; illumination is obtained. Furthergobj-ectslof myinvention residel in providing a structure of o0 Y 1 ,preizfer ,to`carry` outmy invent-ion` to illuminate ,the `area under observation. In'ophthaln1osc`opes, it is desirable to provldean Y thel above ,characterthat is"entreinely compactacomblish the aforesaid objects inl substanlFig 2. isy fa, rear viewot the structure illustrated in Fig'gjureY l'but in'assembled Jform and' Ihaving a portion of the handle andophthalmoscope' socket in V long itudinalk see-v tion.

elevation of an d Fig?? is a. longitudinal axial sectionof a'fragmentaryv portion of' myv improvedhandle. drawn slightly enlarged. I'

dilig.,vr 4c, is an enlarged s j Y transverse section tak n on :line 4 4ofFigure l'gjlo'olringin: 'the direetionot'thearrows.v `f s -v Y 1 Fig.5'is asection on line' 5T5 of Figure 3.

Fig; 6A is a `fragmentary *longitudinalsec-4A tion showing thefrictional means in conjunction with the adjusting slide.` j

.In thedrawings Iha've employed the same reterencecharacters todesignate like parts wherever they oceur throughout the' several views,and by referring toFigures 1 and 2 it will `beseen my inventionvcomprises a'hanf die tha-tlvmay be removablyassembled with an 1instrument for makingsurgical, dental or 0ptioal fexaniinations,V and'vinA the present in'- stance l have illustrated the s'tructureinconllectolfl,` with; .an optical instrument 0f the retieoseeue timefier' ,the :purpose of Simplicity! The'retlosopeitoverenfarmsne Portionof my present invention, exceptins'oian as 1t combines with the idea orinvention of the provision 'of the: relative adjust/ability i of thelamp and the-'lens'-iwith'respect to each other in apl'u'rality.ofdiicerent directionsto control" and. position :the beam of light otiibbo'nlformation: with rfespect to the object upon whichjitisdirec'ted,yas retinoscopes genf, y eral-lyy are" understood to embodyahead `hav-r ing'a sight opening, a light source, andanv inclined mirroror reflector interposed. between the liglQL-t andftheobject; It' isdesignatedl lli by the structure indicated by the numeral whichillustrates a retinoscope head and has ,upon the rear face ofitssupporting plate an elongated tubular element or socketl l1, theupper end of which latter is closed by a lenticular element12 in axialalinement with an angularlydisposed reflector VelementV or mirror 13.The rays in the formof a'ribbon ofV disposed at an angle to each other.Whenl ever the beam et incidence 1s rotated upon its axis the beam ofreflection is correspondingly rotated upon the axis. In order to permitinspection ot the area illuminated by the ribbon of light the usualretinoscope or' Ophthalmo- Vscope sight or sightaperture 13EL isprovided in the mirror so that itis coincident with or in axialalinement with the light beams or at least with the beamof reiiection inorder that the latter beammay be viewed through the mirror. rilheretinoscope head 10 is providedl with a viewingv or sight laperture 10aAin axial alinementvwith the beam of reflection and the mirror aperture13a'. rlhe lower end-of the socket 11 is provided with a slit 14extending longitudinally inwardly from the edge thereof so as to permitof a slight spring action` when the end of the'handle member is insertedin said socket. y V

The handle preferably comprises a barrel 15-of tubular form incross-section, that is preferably elongated, as shown in thek drawings,and the upper portion owhich is slightly reduced in diameter to providean annular shoulder 16 against which the lower edge of the socketV 11abuts when the handle isinserted therein. Thisbarrel is formed oflhardrubber, bakelite or similar insulating Ysubstance. The bore at thereduced endof the barrel is also slightly reduced asat 17 Vto prof: videa bearingin which ahollow metal stem 18 is mounted to slidelo*ngitudinallyl therein, and ,the outerfendofthe saine, whicliprojectsoutside the barrel 15, is, provided with anv enlargement or'head 19 thatis of less diameter than the interior diameter of the socket element110i the instrument so Vthat'it will not interfere or contact therewith.This head or enlargement19 isl hollowfand' is ,internally threaded toprovide an electrical socket connectorinto which is screwed a miniaturelamp or bulb20 oiiany wellknown or suitable YtypehavingasingleiilamenttoI project. a beam in the form of a narrowline, or a transversely condensed beam or ribbon oflight. The oppositeend of the hollow stem 18 is exteriorly threaded and hasscrewedithereonablock 21 Y of insulating material.v The-insulating block 21 isprovidedwith a'central aperture -or bore 22, and a longitudinal grooveor channel 23 is formed Vupon the edge of said blockV sothat the ends ofthe electrical conductors 24 may be positionedin the respective apertureand groove, one of which (that lying in the groove 23) being soldered orotherwise secured to the adjacent end of the metal stem 18, while theother (that passing through the central aperture orbore 22)`extend'sthrough the stem and" is connected to the terminal in terminalsor posts 25 are of suliicient length to project beyond the end of thebarrel, as seenin Figures 1, 2and 3 of the drawings, so

thatwhen the electrical connection is made the miniature plug havingcylindrical terminals may be inserted into the end of the barrel withthe terminals telescoping the posts or pins 25 in the well-known and'Vusual manner. The barrel adjacent the inner end of the spindle 18 isprovided with a lateral aperture 27 that is preferably of the'desiredheight and width to permit'of the engagement of the spindle by meansotanexterior element that is 'connected therewith so that said spindle mayberotated and moved longitudinally whenever desired. Surrounding andat-all times closingV the aperture 27 is an elongatedA sleeve or slide28 ,that rictionally engages the outer surface'of the barrel 15 and f awhich is connected to the spindle 18 by means of' a screw 29 that'passesthrough said sleeve and'is screwed into a tapped opening in theinsulating block21 at the adjacent lower endl of the spindle. In thismeansthe sleeve-28 may be slidV longitudinally upon the barrel and in,any position or any time it may also be rotatedand the spindle 18carrying the lamp or illuminating element 20 willbe correspondinglymoved so that a widerange of adjustment is possible within the limits ofthe aperture 27 in the barrel. In using the instru-l ment, theretinoscope is held before the patient in the usual manner so that theiiat beam or ribbon of light from the'lamp will pass through the lens tothemirror 13 from which itis reflected into the eye to be examined,theoperator making his observationv through the sight l10a and l13a in theusual way. Thus it will be seen that the projected beamer ribbon oflight may be vajgip'liedvto Iany selectedmeridian ofthe eye andby'turningthesleeve 28 the beam or ribbon of light may be placedat iright angle to the meridian selected. It willk permit the sleeve 28 tobe Vturned half way around or one hundred andeighty degrees. Vhen thesleeve-28 -is moved-longitudinally.

of the handle the transverse-dimensions of the L A beam or ribbon oflight is varied, since by such movement the distance between the lampfilament and the lens is varied.V The slot 27 determines both thelongitudinal and the rotary movement of the lamp filament, and this slotis so proportioned that when lthe operating sleeve is at the upper endof its movement the rays passing through the lens will be di'` vergentand produce a plano mirror effect. Vhen theV sleeve is moved inthegopposite di-` rection or downwardly the rays become con-V vergentand focus along `a line so that the-ribbon of light becomes transverselycondensed andV narrowed. The longitudinal extent of the slot 2T is suchthat the lamp may be movedaway from the lens sufiiciently to pro-Vr ducethe effect of a concave mirror retinoscope. In order to provideadditional friction between the barrel and the sleeve 28 I have formed ashallow groove30 in the outer surface of the barrel 15 in which ispositioned an outwardly bowed spring element 31 that bears against theinterior surface of the sleeve 28 and creates sufficient friction tomaintain the parts in their divers adjusted positions.

From the foregoing it will be seen that the Y tubular element of theexamination instrument maybe mountedl upon the handle, and, when theslide 28 is moved longitudinally upon the barrel,rthe lamp or bulb willbe moved longitudinally within vthe tubular ele ment 11 so as to adjustthe filament of the lamp with respectto the lenticular closure 12 andthis adjustment may be both longitudinally'. toward and away 'from thelens e a stein slidably and rotatably mounted in the bore of vsaidextension and projecting above and below said extension, an enlargedhead at each end'ofsaid stem to provide limiting stops therefor, asleeve surrounding the body at .the opening and connected tothe innerhead through said opening for rotating and reciprocating saidvstem, alamp carried by` the outer head,and yieldable friction means interposedbetween said sleeve and body for maintaining the former in its diversposi-V tions of adjustment.

" 2. A device of the kind described compris-IV ing a tubular body havingan elongated opening in one side, yan extension havin a bore of lessdiameter than the bore of said body, a stem Vmovableiin the bore of saidextension and projecting above andbelow saideXt-ension, enlarged-headsat the ends of said stem to provide limiting stops therefor, a slidemovable upon kthe exterio'rof the vbody at the opening and connected tothe inner head through saidl opening for moving said steml ink aplurality of directions, a lamp carried by the outer head, and a tubularelement assembled with said KVextension adjacent the lamp, thearrangement ofthe parts beingf such that the lamp may be rotated andmoved up and down within said Vtubular element.

Signed at Chicago, county of Cook andv State of Illinois.

A WILL J. CAMERON.

d 'flee fies or in a rotary direction so that the'` filament of the bulbwill be'properly positioned to directa fiat beam of light through thelens mirror 13 and from thence upon the tissue under inspection. `Thehandle element `is which will `direct vit ltoward the reflecting freadily removable fromthe instrument, and j the same iscapable of useupon several instruments of diiferent types andin the case of a speculumthe lamp may be slightlyv with- Y drawn below the line ofvision throughthe structure and will not interfere with the observation of the partsunder inspectiony or f: hinder thefuse of instruments thatmay be linserted through the speculum. What I claim is l. In aV handle offtheing in one side, an extension having a bore l dass .deafibed, ltubularbody having a wide elongated openlili

